On Mon, Dec 4, 2017 at 1:57 PM <quans...@gmail.com> wrote:

> i should have mentioned the race detector found nothing. jan, can you
give an example of a go program
> setting a pointer to -1 without using unsafe? this requires the gc to
have free'd something that is still live,
> doesn't it?

See https://research.swtch.com/gorace, under the tiele "A Race".

I wanted to modify the example to produce the -1 pointer, which would be
rather easy, but to my surprise, the original unmodified code does no more
produce the fail (go version go1.9.2 linux/amd64).

That does not mean the principles discussed the rsc's blog post do no more
apply, it's just something now prevents the fail. But that's not the same
as a guarantee of it not happening.



-- 

-j

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